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She needed more concentration to finish her homework.
The ability to focus attention on a specific task or subject.
He lost his concentration during the lecture.
The music helped her maintain concentration while studying.
Concentration is key to solving difficult problems.
full concentration
lack of concentration
improve concentration
focus
attention
absorption
The concentration of salt in the water was very high.
The amount of a substance in a given volume or area.
The concentration of sugar in the juice was too high.
We measured the concentration of pollutants in the air.
A high concentration of nutrients is essential for plant growth.
high concentration
low concentration
concentration level
density
strength
amount